Position of twin engines on MF855
Feb 9, 2018 18:18:54 GMT
Post by hecate on Feb 9, 2018 18:18:54 GMT
I bought a 2013 MF855 last August. Have been making mods to the galley facilities( see thread) and staying on board quite a bit, in the warm and comfort that it provides. The boat has all of the bells and whistles including a Webasto 4.5 KW heater. Tripping up and down the Dart for breakfast etc means that I do an amount of close quarter movement. The starboard helm door is a godsend as I am mostly single handed at this part of the season.
The boat has a bow thruster but being high sided it suffers from windage. The wheel turns from lock to lock seem to be excessive, even with a speed knob it takes an age.
Led by instruction largely found on utube I have been practicing with the engines, straight ahead and selective throttle movements, engaging one engine forward or back, other in neutral etc etc. It works in light conditions but generally I feel that it needs just to much more than tickover, on the engine that is engaged, to get the boat moving. In theory in perfect conditions it should be possible to walk the boat side ways with judicious use of throttles and bow thruster.
Looking to the States, where they all seem to run twin set ups, I have noted that they tend to set the engines much wider apart than is the practice here. I am seriously tempted to move my engines further apart on the transom. Yamaha 150 HP 64P 63P. Would need to lift them a little on the transom but would probably have to live with the loss of a couple of degrees in the swing of the engine. I don't plan to need extreme full lock. As to cavitating in high speed turns out at sea, I don't plan to do any.
Please feel free to comment on my plans, this is my first twin engined outboard boat. I bought it for the comfort of the accommodation not the engines on the back. They do look the business though.
The boat has a bow thruster but being high sided it suffers from windage. The wheel turns from lock to lock seem to be excessive, even with a speed knob it takes an age.
Led by instruction largely found on utube I have been practicing with the engines, straight ahead and selective throttle movements, engaging one engine forward or back, other in neutral etc etc. It works in light conditions but generally I feel that it needs just to much more than tickover, on the engine that is engaged, to get the boat moving. In theory in perfect conditions it should be possible to walk the boat side ways with judicious use of throttles and bow thruster.
Looking to the States, where they all seem to run twin set ups, I have noted that they tend to set the engines much wider apart than is the practice here. I am seriously tempted to move my engines further apart on the transom. Yamaha 150 HP 64P 63P. Would need to lift them a little on the transom but would probably have to live with the loss of a couple of degrees in the swing of the engine. I don't plan to need extreme full lock. As to cavitating in high speed turns out at sea, I don't plan to do any.
Please feel free to comment on my plans, this is my first twin engined outboard boat. I bought it for the comfort of the accommodation not the engines on the back. They do look the business though.